first time using nitrous, can anyone tell me what the best sparkplug to use for a 100 shot with a 350ci engine(350hp engine without the nitrous)
thanks for the help  

there are so many to choose from...

which plugs do you have now....  R45TS, R44TS ?????  you might want to go to a CR43TS if that is what you have been using...     they also make a CR42TS but those are not stocked at as many places....  the CR series of  A/C delco spark plugs has a thicker center and side electrodes so they are less likely to burn off...  


just plan on changing them often.. so keep a few spares along with tools....
i cannot tell you how many times i was changing plugs at tommys in van nuys on somebodys car at 2 am..   but that was decades ago... i quit going to that location when some apt dwelller shot a pellet into the group... hitting steve C in the  side of the nose... from 100+ yards away..  

thanks for the reply, I've been using accel header plugs. I'll try the CR43TS. any other tips for first timers to nitrous?
thanks  

if you are running accel header plugs... they also make a cooler plug....  look it up in their catalog...